I based my BSR identification from the CI Chaos page. Two guys on the BSR site are former employees, I believe one was son of someone in upper management/ownership. They both said that these pans were not produced while they were employed their. Another guy said he had been interviewed for WAGS, said he had been told BSR and relayed that to the interviewer. After which these pans where labeled BSR. I don't know.
The pan has the BSR Century markings and font. Only missing "Made In USA". Other than broken heat ring and extra cross bars, it looks totally BSR. It's in lye now, ready to get it all cleaned up. Whoever or however it was made, it's different and I got it cheap.